Trade policy openness — tariffs, non-tariff barriers, FTAs, industrial protection.
Rule of law as institutional substrate — contract enforcement, judicial independence, equal treatment before the law. Upstream of most other axes.
EAC Customs Union Protocol signed 2 March 2004; entered into force 1 January 2005. Common external tariff structure (0% raw materials, 10% intermediate goods, 25% finished goods) with 5-year phase-in for Kenyan exports to Tanzania/Uganda. First operational African customs union post-1993 EAC revival.
Per invariant 3, reforms are scored by what they did on each channel-separated axis, not by the party that enacted them. This fingerprint is how the policy-match engine finds historical analogues.
Explicit links are curated by the author. Inferred links are hypotheses in the library that test the same axes this policy moved — the framework's answer to "what does the data say about a policy like this?".
Ranked by axis-fingerprint overlap with this policy. Direction match bolded — those are the closest historical analogues. Shape of the match is what drives policy-outcome comparison, not the country or party label.